15616016005505 has 16 divisors (see below), whose sum is σ = 18777233197200. Its totient is φ = 12467491902720.

The previous prime is 15616016005501. The next prime is 15616016005531. The reversal of 15616016005505 is 50550061061651.

It can be written as a sum of positive squares in 8 ways, for example, as 712432219249 + 14903583786256 = 844057^2 + 3860516^2 .

It is not a de Polignac number, because 15616016005505 - 2² = 15616016005501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15616016005501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4387691 + ... + 7105199.

It is an arithmetic number, because the mean of its divisors is an integer number (1173577074825).

Almost surely, 2^{15616016005505} is an apocalyptic number.

It is an amenable number.

15616016005505 is a deficient number, since it is larger than the sum of its proper divisors (3161217191695).

15616016005505 is a wasteful number, since it uses less digits than its factorization.

15616016005505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2719844.

The product of its (nonzero) digits is 135000, while the sum is 41.

The spelling of 15616016005505 in words is "fifteen trillion, six hundred sixteen billion, sixteen million, five thousand, five hundred five".